CN104668589A - Hydraulic three-pawl end-driver center - Google Patents
Hydraulic three-pawl end-driver center Download PDFInfo
- Publication number
- CN104668589A CN104668589A CN201310619802.6A CN201310619802A CN104668589A CN 104668589 A CN104668589 A CN 104668589A CN 201310619802 A CN201310619802 A CN 201310619802A CN 104668589 A CN104668589 A CN 104668589A
- Authority
- CN
- China
- Prior art keywords
- oil pipe
- fixture
- steel oil
- pusher dog
- clamp body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B23/00—Tailstocks; Centres
- B23B23/04—Live centres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/24—Chucks characterised by features relating primarily to remote control of the gripping means
- B23B31/30—Chucks characterised by features relating primarily to remote control of the gripping means using fluid-pressure means in the chuck
- B23B31/302—Hydraulic equipment, e.g. pistons, valves, rotary joints
Abstract
The invention provides a hydraulic three-pawl end-driver center which comprises a fixture, a sleeve, a stopper, a pressure spring, screws, a front cover, an ejector pin and a plugging block. The fixture is connected with a machine tool spindle, a transposable pawl seat is mounted in the fixture, pawls are eccentrically placed into the pawl seat and fixed by the screws, a pin for limiting rotation of the pawl seat is arranged on the pawl seat, a steel oil pipe is arranged in the fixture, a floating medium is placed in the steel oil pipe, the ejector pin transversely penetrates the centers of the fixture and the steel oil pipe, and the plugging block is positioned at the end of the steel oil pipe. When the hydraulic three-pawl end-driver center is used, additional vibration is low, positioning precision is high, a workpiece can be clamped within a certain size range, the use range of the fixture is widened, and the pawls can be timely replaced according to use conditions, so that subsequent turning is facilitated.
Description
Technical field
The invention relates to a kind of fluid pressure type three pusher dog end-driver center, belongs to mechanical field.
Technical background
Along with the continuous progress of cutter material and machine tool technology, the speed of mainshaft of numerically controlled lathe presents day by day high trend, concerning the fixture of clamping axial workpiece, because use end-driver center can not only complete the turnery processing to axial workpiece all outer surfaces under clamped one time condition, decrease clamping times and shorten clamping non-cutting time, therefore end-driver center is a very important developing direction.
The advantage of tailstock power top-closed structure end-driver center is that structure is simple, but toply before positioning workpiece is not fixing but slides, and this just inevitably causes centering precision to decrease.Current Center with Centrifugal Driving Bar, due to the reason such as site error of the manufacture of fixture, rigging error and workpiece end face, operationally each centrifugal physique heart radius can not be consistent, thus inevitably extraneous vibration is caused, the passivation and pusher dog weares and teares for a long time, can not change, these are particularly unfavorable to high-speed turning.Great majority require high to the upright position of workpiece end face, limit range of application.
Summary of the invention
For the problems referred to above, the invention proposes the new Type of Hydraulic three pusher dog end-driver center that a kind of centrifugal force provided with hydraulic pressure is originated for clamping force.
For realizing above object, by the following technical solutions: a kind of fluid pressure type three pusher dog end-driver center, comprise clamp body, cover, block, stage clip, screw, protecgulum, thimble and sprue, wherein clamp body is connected with machine tool chief axis, clamp body is built with the pusher dog seat that can replace, eccentric loading pusher dog in pusher dog seat is also fixed by screw, pusher dog seat is provided with the pin rotated for limiting it, a steel oil pipe is provided with in clamp body, Fluid medium is equipped with in steel oil pipe inside, thimble is horizontally through clamp body and steel oil pipe center, and sprue is positioned at the end of steel oil pipe.
The invention advantage: the invention in use extraneous vibration is little, and centering precision is high, and within the scope of certain size, clamping can be carried out to workpiece, improve the fixture scope of application; Pusher dog can be changed in time according to service condition, is therefore conducive to follow-up turnery.
Accompanying drawing explanation
Fig. 1 is the structural representation of the invention.
Fig. 2 is the side view of oil pipe.
In figure: 1-clamp body; 2-oil pipe; 3-overlaps; 4-sells; 5-block; 6-stage clip; 7-screw I; 8-screw II; 9-protecgulum; 10-pusher dog seat; 11-pusher dog; 12-thimble; 13-Fluid medium; 14-sprue.
Detailed description of the invention
As depicted in figs. 1 and 2, clamp body 1 is built with the pusher dog seat 10 that can replace, and in pusher dog seat, bias loads pusher dog 11, and pusher dog 11 is fixed by screw I 7, and pusher dog seat 10 limits it by pin 4 and rotates, and block 5 and stage clip 6 play reset role; Clamp body 1 is connected with machine tool chief axis, and inside establish a rigidity oil pipe 2 to be embedded in clamp body 1, it walks around axle thimble 12, and Fluid medium 13 is equipped with in inside, and the end of oil pipe 2 is provided with a sprue 14, keeps its stability; Protecgulum 9 is fixed together by screw II 8 with cover 3, workpiece is located between front top 12 and back centre, after whole fixture gets up with lathe spindle operation, due to the flowing of Fluid medium 13, therefore Fluid medium 13 just can radially throw away, and then promotion pusher dog seat 10 moves right, make the cutting edge trace of pusher dog 11 embed in workpiece end face, drive workpiece to rotate.Process is complete, and after machine tool chief axis shuts down, under the effect of stage clip 6 and sprue 5, pin 4 drives pusher dog seat 10 to return to sheet together with pusher dog 11.Reset to center of gravity direction under the Action of Gravity Field of Fluid medium 13.
Claims (1)
1. a fluid pressure type three pusher dog end-driver center, it is characterized in that: comprise clamp body (1), cover (3), block (5), stage clip (6), screw I (7), screw II (8), protecgulum (9), thimble (12) and sprue (14), wherein clamp body (1) is connected with machine tool chief axis, clamp body (1) is built with the pusher dog seat (10) that can replace, eccentric loading pusher dog (11) in pusher dog seat (10) is also fixed by screw (7), pusher dog seat (10) is provided with the pin (4) rotated for limiting it, a steel oil pipe (2) is provided with in clamp body (1), Fluid medium (13) is equipped with in steel oil pipe (2) inside, thimble (12) is horizontally through clamp body (1) and steel oil pipe (2) center, sprue (14) is positioned at the end of steel oil pipe (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310619802.6A CN104668589A (en) | 2013-11-29 | 2013-11-29 | Hydraulic three-pawl end-driver center |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310619802.6A CN104668589A (en) | 2013-11-29 | 2013-11-29 | Hydraulic three-pawl end-driver center |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104668589A true CN104668589A (en) | 2015-06-03 |
Family
ID=53304462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310619802.6A Pending CN104668589A (en) | 2013-11-29 | 2013-11-29 | Hydraulic three-pawl end-driver center |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104668589A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109332734A (en) * | 2018-11-20 | 2019-02-15 | 宁夏贺兰县机床附件厂 | A kind of end face hydraulic automatic driver plate with the utilization rate for improving material |
-
2013
- 2013-11-29 CN CN201310619802.6A patent/CN104668589A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109332734A (en) * | 2018-11-20 | 2019-02-15 | 宁夏贺兰县机床附件厂 | A kind of end face hydraulic automatic driver plate with the utilization rate for improving material |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150603 |